21376051230103 has 4 divisors (see below), whose sum is σ = 21392634669120. Its totient is φ = 21359467791088.

The previous prime is 21376051230091. The next prime is 21376051230109. The reversal of 21376051230103 is 30103215067312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21376051230103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376051230109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8291717575 + ... + 8291720152.

It is an arithmetic number, because the mean of its divisors is an integer number (5348158667280).

Almost surely, 2^{21376051230103} is an apocalyptic number.

21376051230103 is a deficient number, since it is larger than the sum of its proper divisors (16583439017).

21376051230103 is a wasteful number, since it uses less digits than its factorization.

21376051230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16583439016.

The product of its (nonzero) digits is 22680, while the sum is 34.

Adding to 21376051230103 its reverse (30103215067312), we get a palindrome (51479266297415).

The spelling of 21376051230103 in words is "twenty-one trillion, three hundred seventy-six billion, fifty-one million, two hundred thirty thousand, one hundred three".